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Diffstat (limited to '')
| -rwxr-xr-x | tests/misc/chroot-credentials.sh | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/tests/misc/chroot-credentials.sh b/tests/misc/chroot-credentials.sh new file mode 100755 index 0000000..38a50dc --- /dev/null +++ b/tests/misc/chroot-credentials.sh @@ -0,0 +1,123 @@ +#!/bin/sh +# Verify that the credentials are changed correctly. + +# Copyright (C) 2009-2020 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ chroot + +require_root_ + +EXIT_CANCELED=125 + +grep '^#define HAVE_SETGROUPS 1' "$CONFIG_HEADER" >/dev/null \ + && HAVE_SETGROUPS=1 + +root=$(id -nu 0) || skip_ "Couldn't look up root username" + +# verify numeric IDs looked up similarly to names +NON_ROOT_UID=$(id -u $NON_ROOT_USERNAME) +NON_ROOT_GROUP=$NON_ROOT_GID # Used where we want name lookups to occur + +# "uid:" is supported (unlike chown etc.) since we treat it like "uid" +chroot --userspec=$NON_ROOT_UID: / true || fail=1 + +# verify that invalid groups are diagnosed +for g in ' ' ',' '0trail'; do + returns_ $EXIT_CANCELED chroot --groups="$g" / id -G >invalid || fail=1 + compare /dev/null invalid || fail=1 +done + +# Verify that root credentials are kept. +test $(chroot / whoami) = "$root" || fail=1 +test "$(groups)" = "$(chroot / groups)" || fail=1 + +# Verify that credentials are changed correctly. +whoami_after_chroot=$( + chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP / whoami +) +test "$whoami_after_chroot" != "$root" || fail=1 + +# Verify that when specifying only a group we don't change the +# list of supplemental groups +test "$(chroot --userspec=:$NON_ROOT_GROUP / id -G)" = \ + "$NON_ROOT_GID $(id -G)" || fail=1 + +if ! test "$HAVE_SETGROUPS"; then + Exit $fail +fi + +# Change all whitespaces to newlines, then sort the input. +# Use for tests with more groups in 'id' output. +num_sort() { tr -s ' ' '\n' | sort -n; } + +# Verify that there are no additional groups. +id_G_after_chroot=$( + chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP \ + --groups=$NON_ROOT_GROUP / id -G +) +test "$id_G_after_chroot" = $NON_ROOT_GID || fail=1 + +# Verify that when specifying only the user name we get all their groups +test "$(chroot --userspec=$NON_ROOT_USERNAME / id -G | num_sort)" = \ + "$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1 + +# Ditto with trailing : on the user name. +test "$(chroot --userspec=$NON_ROOT_USERNAME: / id -G | num_sort)" = \ + "$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1 + +# Verify that when specifying only the user and clearing supplemental groups +# that we only get the primary group +test "$(chroot --userspec=$NON_ROOT_USERNAME --groups='' / id -G)" = \ + $NON_ROOT_GID || fail=1 + +# Verify that when specifying only the UID we get all their groups +test "$(chroot --userspec=$NON_ROOT_UID / id -G | num_sort)" = \ + "$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1 + +# Verify that when specifying only the user and clearing supplemental groups +# that we only get the primary group. Note this variant with prepended '+' +# results in no lookups in the name database which could be useful depending +# on your chroot setup. +test "$(chroot --userspec=+$NON_ROOT_UID:+$NON_ROOT_GID --groups='' / id -G)" =\ + $NON_ROOT_GID || fail=1 + +# Verify that when specifying only a group we get the current user ID +test "$(chroot --userspec=:$NON_ROOT_GROUP / id -u)" = "$(id -u)" \ + || fail=1 + +# verify that arbitrary numeric IDs are supported +test "$(chroot --userspec=1234:+5678 --groups=' +8765,4321' / id -G)" \ + || fail=1 + +# demonstrate that extraneous commas are supported +test "$(chroot --userspec=1234:+5678 --groups=',8765,,4321,' / id -G)" \ + || fail=1 + +# demonstrate that --groups is not cumulative +test "$(chroot --groups='invalid ignored' --groups='' / id -G)" \ + || fail=1 + +if ! id -u +12342; then + # Ensure supplemental groups cleared from some arbitrary unknown ID + test "$(chroot --userspec=+12342:+5678 / id -G)" = '5678' || fail=1 + + # Ensure we fail when we don't know what groups to set for an unknown ID + returns_ $EXIT_CANCELED chroot --userspec=+12342 / true || fail=1 +fi + +Exit $fail |